I have a 77 Bronco. It has a 89 5.0L Ford with the old three speed, 4.11 gears with a Dana 44 up front and a locking 9" in the rear. No power steering so I only have 33" on it. On the road it will spin the tires in the first two gears but only gets up to 80mph before she's screaming. It's great to take the top off in the summer.
I also had a 66 Land Rover Series 2A. Decent articulation and really low gearing. The old Land Rover is actually easier to drive off road except for in the mud. The Bronco has no articulation but has lots of power to hit the mud holes and spin up the last bit of hills.
Problem was these trucks were my only transportation. When you go offroad, eventually your going to break something. Espesially old trucks. It got too expansive to dish out money every few weeks for stuff.
I want to restore the Bronco but when you add up the special parts it takes, plus the goodies (Dana 60's, Atlas transfercase, NV4500, custom suspension) it's going to cost $30, 000.
The Land Rover is like a big mecano set. I could do everything in my garage. If I put my energy into one of these it wouldn't keep up with the big tire Jeeps though.